Magnetism of core-shell Ti:TiO nanoparticles

Xiaohui Wei, Ralph Skomski, B. Balamurugan, David J Sellmyer

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ti nanoparticles were produced using a cluster-deposition method. Ti:TiO core-shell structures were fabricated by partially oxidizing the surface of the Ti nanoparticles produced by a cluster-deposition system via multistep annealing at [formula omitted] in oxygen. X-ray diffraction and transmission-electron microscopy studies reveal an increase in the thickness of the TiO shell with increasing annealing time. The magnetic moment and the coercivity of the core-shell nanoparticles increase with the TiO shell thickness, which is consistent with homogenous bulk defects in TiO. The core-shell nanoparticles display an abnormal hysteresis loop, which probably reflects a combination of antiferromagnetic exchange and magnetocrystalline anisotropy.

Original languageEnglish (US)
Number of pages1
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
StatePublished - May 1 2010

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nanoparticles
annealing
coercivity
magnetic moments
hysteresis
transmission electron microscopy
anisotropy
defects
oxygen
diffraction
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Magnetism of core-shell Ti:TiO nanoparticles. / Wei, Xiaohui; Skomski, Ralph; Balamurugan, B.; Sellmyer, David J.

In: Journal of Applied Physics, Vol. 107, No. 9, 01.05.2010.

Research output: Contribution to journalArticle

Wei, Xiaohui ; Skomski, Ralph ; Balamurugan, B. ; Sellmyer, David J. / Magnetism of core-shell Ti:TiO nanoparticles. In: Journal of Applied Physics. 2010 ; Vol. 107, No. 9.
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